Iec Starter Size Chart

To standards developed by the international electrotechnical commission. For example iec standardizes the frame size of motors.

Motor Frame Chart Foxytoon Co

It is clear the nema standard wants to keep it simple as there are 10 nema starter sizes between 2 hp and 900 hp a range over which one iec manufacturer has 20 sizes.

Iec starter size chart. With so many different electrical contactors and starters to choose from you may be curious about the pros and cons of iec vs nema rated devices. Iec standards specify 20 sizes to cover the same range of motors. Selecting an iec motor starter.

Posted may 30 2017 by springercontrols. Ease of selection is a fundamental design advantage of a nema style starter. The nema size system has extra reserve capacity built in which is what enables the same size contactor to be applicable for a wide range of applications.

Home about us news selecting an iec motor starter. Home about us news iec vs nema. The national electrical manufacturers association nema and the international electrotechnical commission iec are two organizations that rate contactors and motor starters.

Press controls built for 75hp main flywheel motors at 208vac will typically have a 60 amp mc switch. Sizing an iec starter of the same type requires knowing the motor load the duty cycle and full load current. To select a nema starter only horsepower and voltage are needed.

Read on to learn more about the two different standards organizations and which one might suit your intended application best. Iec style contactors on the other hand are sold more as components that are installed in a panel. Wye delta starting.

Maximum horsepower 3 phase motors. Posted july 19 2018 by springercontrols. This is a detailed guide in selecting the right motor starter for your application.

This nema starter and iec starter are each sized for up to a 27 amp load with the nema starter capable of a wider range of duty befitting its larger size and greater weight. In the case of process performance motors there are frame sizes starting from iec frame 56 in the aluminum range up to 450 millimeters from. Lets start with a quick brush up on the components of a motor starter.

This chart has been revised to require a size 2 starter for 75 hp at 208vac. Additionally iec defines more than 30 utilization categories for the contactor part of a motor starter in. Contactor and starter ratings contactors and motor starters are rated according to size and type of load they are designed to handle.

Nema standards list 10 sizes to cover 2 hp to 900 hp motors. 125 size 5 size 5 150 size 5 size 5 note. Nema starter sizes based on motor horsepower and voltage.

47 453 soft starters 48 454 starting with a variable speed drive. Nema starters have interchangeable heater elements and makes nema starters attractive in projects where the motor specification is not known until the start up date.

Nema Vs Iec Motor Controls How To Select The Best Choice For Your